**The Main Challenge**

A gentle logic puzzle for all members of the family to try.

The nine numbers, **1-9**, must be placed into the 3-by-3 grid by following these rules:

- 1 is in the top right-hand corner
- 3 and 8 are also in the top row
- 2 is in the middle row, left-hand side
- 4 and 6 are both in the bottom row
- 8 and 7 are in the left-hand column
- 6 and 9 are in the right-hand column

**x x ** **x**

**x x ** **x**

**x x ** **x**

Can you now insert the numbers **1-9**, once each, into the correct places?

**The 7puzzle Challenge**

The playing board of **the 7puzzle game** is a 7-by-7 grid containing 49 different numbers, ranging from **2 **up to **84**.

The 1st & 6th columns contain the following fourteen numbers:

7 13 21 22 27 30 36 40 49 54 55 56 60 64

Find three pairs of numbers that each total 43.

**T****he Factors Challenge**

**The Mathematically Possible Challenge**

Using **1**, **3** and **9 **once each, with + – × ÷ available, which FIVE numbers is it possible to make from the list below?

4 8 12 16 20 24 28 32 36 40

#*4TimesTable*

**The Target Challenge**

Can you arrive at **345** by inserting **5**, **10**, **15**, **20** and **25** into the gaps on each line below?

- (◯+◯÷√◯)×(◯+◯) = 345
- (◯+◯)×◯–◯÷◯ = 345

**Answers **can be found **here**.

**Click Paul Godding for details of online maths tuition.**